Journal, B. S. “Synthesis ,spectroscopic Study of Antipyryl Azo 2-Naphthol and Use It As New Reagent for Determination of Co(II) and Cu(II): Hussain.J. Mohammed|Azhar.Y. Muhi |Fatema. Abbas”. Baghdad Science Journal, vol. 10, no. 3, Sept. 2013, pp. 977-85, doi:10.21123/bsj.2013.10.3.977-985.